Announced at TechEd North America on Monday, SP1 for Office and SharePoint 2010 is being scheduled for release at the end of June 2011. This release will include updates across the client suites and server products. Check out the list of improvements and new features on;
The SharePoint team blog http://sharepoint.microsoft.com/blog/Pages/BlogPost.aspx?pID=973
The Office team blog http://blogs.technet.com/b/office_sustained_engineering/archive/2011/05/16/announcing-service-pack-1-for-office-2010-and-sharepoint-2010.aspx
I am personally excited about the availability of printing support in the Word Web Application in “Edit Mode” and SharePoint and Office Web Applications getting native support for IE9 and no longer needing to run in IE8 Mode.